From psychologic point of view, there are two types of people - those who believe that their behaviour is determined by people around and circumstances, they are inclined to explain their deeds by influence of some other events and ascribe all responsibility for their activity to "environment", and those who consider themselves responsible for every action they do, even if circumstances are unfavourable, they don't justify own mistakes...
So, my idea is that all of us would be the second type! We should be responsible for own actions and don't blame everybody for the happened... (what most of the people do)... Be active and control yourself!!!